ENGINE - COMBUSTION SECTION - IMPROVED PACKAGE 1 COMBUSTION LINER HEAD IN C263 MATERIAL AND LOCAL THICKENED DIFFUSER WALLS AROUND STRUTS - MOD.72-9670

1. Planning Information A. Effectivity (1) Lockheed L-1011 RB211-524B-02, -524B-02/10, -524B-02/11, -524B-02/12, -524B-02/14, -524B-B-02, -524B-B-02/10, -524B-B-02/11, -524B-B-02/12, -524B-B-02/14 Engines prior to Serial No.14592 RB211-524 Modules -M04204, -M04553AA, -M04553AB, -M04553AC, -M04562AA, -M04562AB, -M04580AA, -M04580AB, -M04580AC, -M04580AD, -M04580AE, -M04580AF prior to Serial No.CM5111 RB211-524B3-02 Engines prior to Serial No.14638 RB211-524 Modules -M04206, -M04556AA, -M04556AB, -M04556AC, -M04564AA, -M04564AB prior to Serial No.CM5244 RB211-524B4-02, -524B4-02/10, -524B4-02/11, -524B4-D-02, -524B4-D-02/10, -524B4-D-02/11 Engines prior to Serial No.14883 RB211-524 Modules -M04501AA, -M04501AB, -M04501AC, -M04501AD, -M04501AE, -M04501AF, -M04503AA, -M04503AB, -M04503AC, -M04503AD, -M04503AJ, -M04503AK, -M04576AA, -M04576AB, -M04577AA, -M04577AB, -M04578AA, -M04578AC, -M04579AA, -M04579AC, -M04706AA, -M04707AA, -M04708AA, -M04709AA, -M04716AA, -M04717AA, -M04718AA, -M04718AB, -M04720AA, -M04721AA, -M04722AA, -M04722AB, -M04729AA, -M04729AB prior to Serial No.CM5607 (2) Boeing 747 RB211-524B2-19, -524B2-19/12, -524B2-B-19, -524B2-B-19/12 Engines prior to Serial No.12073 RB211-524 Modules -M04204, -M04209, -M04553AA, -M04553AB, -M04553AC, -M04557AA, -M04557AB, -M04557AE, -M04562AA, -M04562AB, -M04563AA, -M04563AC, -M04566AA, -M04566AB, -M04566AC, -M04566AD, -M04566AE, -M04566AF prior to Serial No.CM7099 RB211-524C2-19, -524C2-19/12, -524C2-19/16, -524C2-B-19, -524C2-B-19/12, -524C2-B-19/16 Engines prior to Serial No.12319 RB211-524 Modules -M04209, -M04557AA, -M04557AB, -M04557AC, -M04557AD, -M04557AE, -M04557AF, -M04563AA, -M04563AB, -M04563AC, -M04563AD, -M04565AA, -M04566AA, -M04566AB, -M04566AC, -M04566AD, -M04566AE, -M04566AF prior to Serial No.CM7344 

# RB.211−72−9670 Aug.27/93 Page 1 of 49Printed in Great BritainRB211-524D4-19, -524D4-19/11, -524D4-19/12, -524D4-19/15, -524D4-19/17, -524D4-19/18, -524D4-19/19, -524D4-19/21, -524D4-19/22, -524D4X-19, -524D4X-19/11, -524D4X-19/12, -524D4X-19/15, -524D4X-19/17, -524D4X-19/18, -524D4X-19/19, -524D4X-19/21, -524D4X-19/22, -524D4-B-19, -524D4-B-19/11, -524D4-B-19/12, -524D4-B-19/15, -524D4-B-19/17, -524D4-B-19/18, -524D4-B-19/19, -524D4-B-19/21, -524D4-B-19/22, -524D4X-B-19, -524D4X-B-19/11, -524D4X-B-19/12, -524D4X-B-19/15, -524D4X-B-19/17, -524D4X-B-19/18, -524D4X-B-19/19, -524D4X-B-19/21, -524D4X-B-19/22 Engines prior to Serial No.12790 RB211-524 Modules -M04502AA, -M04502AB, -M04502AC, -M04502AD, -M04502AE, -M04502AF, -M04505AA, -M04505AB, -M04505AC, -M04505AD, -M04505AE, -M04505AF, -M04590AA, -M04590AB, -M04590AC, -M04590AD, -M04590AE, -M04590AF prior to Serial No.CM7806 RB211-524D4-39, -524D4-B-39 Engines prior to Serial No.12561 RB211-524 Modules -M04506AA, -M04506AB, -M04506AC, -M04506AD, -M04574AA, -M04574AB, -M04574AC, -M04574AD, -M04594AA, -M04594AB, -M04594AC, -M04594AD prior to Serial No.CM3961
B. Reason (1) Problem Cracking of the front combustion liner head assembly can occur after extended use. (2) Evidence There have been incidents on engines in service of this problem. (3) Substantiation The changes introduced by this Service Bulletin have completed over 1000 cycles of development engine testing at temperature conditions in excess of those likely to be encountered by engines in service after which the combustor was found to be in good condition. Engineering analysis confirms a reduction in stresses in the affected area when a strengthened head is incorporated and the problem is alleviated. (4) Objective Incorporation of the changes introduced by this Service Bulletin (Modification) is designed to maintain reliability. (5) Effect of bulletin on:



# RB.211−72−9670 Aug.27/93 Page 2Printed in Great BritainOperation Not affected Maintenance Not affected Overhaul Not affected Repair Schemes Affected (see 1.J.) Interchangeability Not affected C. Description (1) The changes introduced by this Service Bulletin are as follows: A revised front combustion liner assembly is introduced similar to the existing item except for the following: (a) The combustion liner head with diffuser, diffuser walls and bleed offtake struts is produced in C263 material instead of N75 material. (b) Reduced axial length bleed offtake struts with increased leading edge radius. (c) Local thickening of diffuser walls around struts. (2) Existing front combustion liner assemblies can be reworked, see Fig.1 to 11. (3) Part 1 of S.B. A head section assembly is required to accomplish rework of the front combustion liner, see Fig.1 to 4 and 11. Part 2 of S.B. A head outer shell section assembly is required to accomplish rework of the front combustion liner, see Fig.5 to 11. NOTE: It is permissible, on front combustion liners incorporating S.B.RB211-72-8952 (see 1.J.) to use the modification kit from part 2 to achieve the part 1 standard. (4) For relationship with other Service Bulletins see 1.J. (5) This Service Bulletin is in two parts as follows: Part 1 New production and rework existing front combustion liner assemblies. Part 2 Rework existing front combustion liner assemblies not incorporating S.B.RB211-72-8952. D. Compliance
OPTIONAL 

# RB.211−72−9670 Aug.27/93 Page 3Printed in Great BritainRolls-Royce recommends accomplishment of this Service Bulletin (Modification) when stocks of pre-modification standard parts have been used up. E. Approval Modification 72-9670 was approved by a representative of the United Kingdom Civil Aviation Authority (C.A.A.) on June 3/93 The contents of this Service Bulletin are approved under the authority of C.A.A. Approval No.DAI/9000/84. F. Manpower Estimated manhours: (1) In service .. .. .. Not applicable (2) At overhaul .. .. .. Refer Accomplishment Instructions: Part 2.B.: 20 hours Part 2.C.: 40 hours (excluding any repairs which may be required). NOTE: The parts affected by this Service Bulletin are accessible at overhaul. G. Material - Price and Availability Modification kit not required; parts supplied as single line items. For prices and availability of future spares, see supplement to this bulletin. H. Tooling - Price and Availability For prices and availability, see supplement to this bulletin. Usage Part No. Description A.M.O. Function Additional tools MH13402 Location ring * Locate combustion liner head section and inner wall whilst tack welding MH13403/1 Argon backing * Supply argon backing whilst block welding replacement combustion liner head section to combustion liner inner wall 

# RB.211−72−9670 Aug.27/93 Page 4Printed in Great BritainMH13406/1 Argon backing * Supply argon backing whilst block welding replacement combustion liner head section to combustion liner outer wall MH13432/2 Location clamp * Locate combustion liner ring (inner wall) inner wall whilst tack welding to replacement combustion liner head section. Locate during post weld inspection MH13434 Check gauge * Post weld inspect position (inner wall) of inner wall MH13775/2 Location clamp * Locate combustion liner ring (outer wall) outer wall whilst tack welding to replacement combustion liner head section. Locate during post weld inspection MH13814 Check gauge * Post weld inspect position (outer wall) of outer wall MH16253 Checking and * Hold combustion liner welding fixture component parts and tooling components during tack welding and post weld inspection HC22892 Insert tool * Insert wire thread insert 3405528 Tang removal tool * Remove tang from fitted wire thread insert HCU5037 Thread gauge * Inspect fitted wire thread insert threads HC21740 Torque check plug * Check fitted wire thread insert torque HC21743 Torque adapter * Check fitted wire thread insert torque 1704302 Torquemaster * Check fitted wire thread insert torque



# RB.211−72−9670 Aug.27/93 Page 5Printed in Great Britain' A' - accomplishment Usage column abbreviation' M' - maintenance ' O' - overhaul I. Weight and Balance (1) Weight change .. .. .. plus 0,77 Kg. (1.7 lb.) (2) Moment arm .. .. .. .. 1219 mm. (48in.) rearward (3) Datum .. .. .. .. .. Engine front mount centreline J. References (1) All engines This Service Bulletin supersedes the following RB211 Service Bulletins: Parts 1 and 2 of S.B. 72-8980 Combustion section - Front combustion liner (hairpin standard) - Stiffened cabin air off-take struts 72-9122 Combustion liners - Front combustion liner assembly with the P4 air transfer pillar bosses in revised material Part 1 of S.B. 72-8952 Combustion - Front combustion liner assemblies (Pre-RB211 Mod.72-7998) with aluminised heatshields. (2) RB211-524B4-02, -524B4-D-02, -524D4-19, -524D4-B-19, -524D4X-19, -524D4X-B-19, -524D4-39, -524D4-B-39 engines. This Service Bulletin only applies to engines not incorporating the following Service Bulletin: 72-7998 Engine - Combustion section - Phase 2 low emission front combustion liner with Parker Hannifin fuel spray nozzles (3) Engine Manual, 72-41-13, Removal and Installation, 72-41-00, Disassembly and Assembly. (4) Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-100-101, 70-00-00-200-210, 70-00-00-200-213, 70-00-00-300-409. (5) Repair Schemes FRS3002, 5366 and 5449. (6) Standard Practices Manual, TASK 70-42-13-300-001.



# RB.211−72−9670 Aug.27/93 Page 6Printed in Great BritainK. Other Publications Affected (1) For affect on Illustrated Parts Catalogue (I.P.C.) refer to 3. Material Information.



# RB.211−72−9670 Aug.27/93 Page 7Printed in Great Britain2. Accomplishment Instructions A. The front combustion liner assembly introduced by this Service Bulletin is interchangeable with existing. Remove and install in accordance with current overhaul procedure (Engine Manual, 72-41-13, Removal and Installation, 72-41-00, Disassembly and Assembly) B. Rework existing front combustion liner assembly (UL16885, UL26916, UL27107, UL28972, UL28974) (72-41-13, Fig./Item No.02250) - Part 1 of S.B. Consumable Materials OMat 508 Polishing buff OMat 3/62 C263 material weld filler wire Tools Tool Number Description Function MH13402 Location ring Locate combustion liner head section and inner wall whilst tack welding MH13403/1 Argon backing block Supply argon backing whilst welding replacement combustion liner head section to combustion liner inner walls MH13406/1 Argon backing block Supply argon backing whilst welding replacement combustion liner head section to combustion liner outer wall MH13432/2 Location clamp ring Locate combustion liner inner wall (inner wall) whilst tack welding to replacement combustion liner head section. Locate during post weld inspection MH13434 Check gauge Post weld inspect position of inner (inner wall) wall MH13775/2 Location clamp ring Locate combustion liner outer wall (outer wall) whilst tack welding to replacement combustion liner head section. Locate during post weld inspection. MH13814 Check gauge Post weld inspect position of outer (outer wall) wall MH16253 Checking and Hold combustion liner component parts welding fixture and tooling components during tack welding and post weld inspection 

# RB.211−72−9670 Aug.27/93 Page 8Printed in Great BritainHC22892 Insert tool Insert wire thread insert 3405528 Tang removal tool Remove tang from fitted wire thread insert HCU5037 Thread gauge Inspect fitted wire thread insert threads HC21740 Torque check plug Check fitted wire thread insert torque HC21743 Torque adapter Check fitted wire thread insert torque 1704302 Torquemaster Check fitted wire thread insert torque Procedure Supplementary Information (1) Machine, to separate liner head Refer to Fig.1 and 2. assy from inner and outer walls Pack under front lip as required and clamp to machine table. Cut into head section leaving a trim allowance on inner and outer walls. Discard head assembly. Use vertical lathe (2) Machine inner and outer walls Refer to Fig.1 and 2. to length as required for Use vertical lathe re-fitting (3) Deburr (4) Remove thermal barrier coating Refer to Fig.1 and 2 and Engine from areas adjacent to weld line Manual, TASK 72-41-13-300-075, on inner and outer walls Repair Scheme FRS5366. Do not thin parent material below 0,98 mm. (0.039in.) Use portable grinding equipment (5) Select replacement combustion Refer to Fig.3 and 3. Material liner head section assembly Information
Parts UL34277 Combustion liner head section assembly



# RB.211−72−9670 Aug.27/93 Page 9Printed in Great Britain(6) Clean weld edges of liner walls Refer to Fig.2 and head section assembly OMat 508, Polishing buff (7) Locally degrease all weld edges Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-0000-100-101 (8) Assemble replacement head Refer to Fig.1 to 4. section assembly and inner and Ensure correct radial and axial outer liner walls into welding position fixture Tools MH13432/2 Location clamp ring (inner wall) MH13775/2 Location clamp ring (outer wall) MH16253 Checking and welding fixture MH13402 Location ring (9) Argonarc tackweld around Refer to Fig.1 and 3. circumference of combustion Engine Overhaul Processes Manual, liner head assembly and inner T.S.D.594-J, TASK 70-00-00-300-409. and outer wall joints Tack weld through location ring slots. Group 2 welds 12,7 mm. (0.500in.) long Tools MH13406/1 Outer wall argon backing block MH13403/2 Inner wall argon backing block Welding Data



# RB.211−72−9670 Aug.27/93 Page 10Printed in Great BritainType of welding .. .. .. .. .. Argonarc DC output Weld group .. .. .. .. .. .. Group 2 Filler material .. .. .. .. .. OMat 3/62 (C263 material) Torch .. .. .. .. .. .. .. BOC 200 or any 200 amp water cooled equivalent Electrode .. .. .. .. .. .. 2 per cent thoriated tungsten 2,362 mm. (0.093in.) dia. Current .. .. .. .. .. .. 20 to 25 amps Gas flow .. .. .. .. .. .. 25 C.F.H. for torch 15 C.F.H. for backing Polarity .. .. .. .. .. .. Negative This data is given for guidance only. Optimum settings must be obtained by trials. (10) Remove tackwelded assembly from fixture (11) Planish joints at inner and outer positions to produce good butt joints (12) Argonarc weld complete inner and Refer to Fig.1 and 3. outer circumferential joints Refer to Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-300-409 and Welding Data in Operation 2.B.(9) OMat 3/62 C263 material filler wire Tools MH13406/1 Outer wall apron backing block MH13403/2 Inner wall argon backing block (13) Fluorescent penetrant inspect Engine Overhaul Processes Manual, welded areas T.S.D.594-J, TASK 70-00-00-200-210 or TASK 70-00-00-200-213. Reject if cracked (14) Inspect welds Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-300-409, Fig.70-00-00-990-409-003, 004, 005, A06 and B06 butt weld acceptance standards. Group 2 welds



# RB.211−72−9670 Aug.27/93 Page 11Printed in Great Britain(15) Dress excess weld bead flush Maximum height of weld bead after to parent material dressing to be 0,25 mm. (0.010in.). Parent material must not be reduced Use portable grinding equipment (16) Dimensionally inspect Refer to Fig.1, 3 and 4 and Engine Manual, TASK 72-41-13-300-072, Repair Scheme FRS2518 - Basic Repair Data. Locate in check/weld fixture and inspect liner wall positions Tools MH16253 Checking and welding fixture MH13432/2 Location clamp ring (inner wall) MH13775/2 Location clamp ring (outer wall) MH13434 Check gauge (inner wall) MH13814 Check gauge (outer wall) (17) Re-apply thermal barrier Refer to Fig.1 and 3 and Engine coating to areas of weld joints Manual, TASK 72-41-13-300-075, and apply to designated areas Repair Scheme FRS5366 in head assembly (18) Select wire thread inserts Refer to Fig.11 and 3. Material Information
Parts AGS3707 Wire thread insert (19) Fit wire thread inserts Refer to Fig.11 and Standard Practices Manual, TASK 70-42-13-300-001, Repair Scheme FRS3002. Fit wire thread insert AGS3707, nominal unified thread size 0.250in. dia. x 28 T.P.I. Tools HC22892 Insert tool 3405528 Tang removal tool 

# RB.211−72−9670 Aug.27/93 Page 12Printed in Great BritainHCU5037 Thread gauge (20) Check torque of inserts Tools HC21740 Torque check plug HC21743 Torque adapter 1704302 Torquemaster (21) Inspect inserts Refer to Fig.11. Ensure inserts are installed at correct depth (22) Cancel existing part number Existing Re-number and adjacent to it re-identify with new part number by UL16885 ) vibro-engraving UL26916 ) UL27107 ) UL34009 UL28972 ) UL28974 ) Use vibro-engraving equipment C. Rework existing front combustion liner assy (UL16885, UL27107) (72-41-13 Fig./Item No.02250 - Part 2 of S.B. Consumable Materials OMat 508 Polishing buff OMat 3/62 C263 material weld filler wire Tools Tool Number Description Function MH13402 Location ring Locate combustion liner head section and inner wall whilst tack welding MH13403/2 Argon backing block Supply argon backing whilst welding replacement combustion liner head section to combustion liner inner wall MH13406/1 Argon backing block Supply argon backing whilst welding replacement combustion liner head section to combustion liner outer wall



# RB.211−72−9670 Aug.27/93 Page 13Printed in Great BritainMH13432/2 Location clamp ring Locate combustion liner inner (inner wall) wall whilst tack welding to replacement combustion liner head section. Locate during post weld inspection MH13434 Check gauge Post weld inspect position of (inner wall) inner wall MH13775/2 Location clamp ring Locate combustion liner outer (outer wall) wall whilst tack welding to replacement combustion liner head section. Locate during post weld inspection MH13814 Check gauge Post weld inspect position of (outer wall) outer wall MH16253 Checking and Hold combustion liner component welding fixture parts and tooling components during tack welding and post weld inspection HC22892 Insert tool Insert wire thread insert 3405528 Tang removal tool Remove tang from fitted wire thread insert HCU5037 Thread gauge Inspect fitted wire thread insert threads HC21740 Torque check plug Check fitted wire thread insert torque HC21743 Torque adapter Check fitted wire thread insert torque 1704302 Torquemaster Check fitted wire thread insert torque Procedure Supplementary Information (1) Machine, to separate liner head Refer to Fig.5 and 6. assembly from inner and outer Pack under front lip as required and

walls clamp to machine table. Cut into head section leaving a trim allowance on inner and outer walls. Do not cut into meter panel assembly inside head section, as the meter panel assembly will be re-fitted 

# RB.211−72−9670 Aug.27/93 Page 14Printed in Great BritainUse vertical lathe (2) Machine inner and outer walls Refer to Fig.5 and 6. to length required for re-fitting Use vertical lathe (3) Deburr (4) Remove thermal barrier coating Refer to Fig.5 and 6 and Engine from areas adjacent to weld line Manual, TASK 72-41-13-300-075, on liner inner and outer walls Repair Scheme FRS5366. Do not thin parent material below 0,98 mm. (0.039in.) (5) Remove existing meter panel Refer to Fig.5 and 6. assembly from existing head Cut through head section assembly section assembly forward of meter panel assembly at inner and outer positions. Do not cut into meter panel assembly. Discard existing head section assembly. Retain existing meter panel assembly Use vertical lathe or hand grinding equipment (6) Remove remnants of existing Refer to Fig.5 and 6. head section assembly from Do not thin meter panel below existing meter panel assembly minimum section allowed Use hand grinding equipment (7) Inspect existing meter panel Refer to Engine Manual, TASK assembly for damage and repair 72-41-13-200-002-B01, if required Inspection/Check (8) Fluorescent penetrant inspect Engine Overhaul Processes Manual, existing meter panel assembly T.S.D.594-J, TASK 70-00-00-200-210 and existing inner and outer or TASK 70-00-00-200-213. Reject liner walls if cracked (9) Select replacement head outer Refer to Fig.7 and 3. Material shell section Information
Parts UL34278 - Combustion liner head outer shell (10) Fit existing meter panel assembly Refer to Fig.7, 8 and 9 and Engine to replacement head outer shell Manual, TASK 72-41-13-300-077, section Repair Scheme FRS5449 

# RB.211−72−9670 Aug.27/93 Page 15Printed in Great Britain(11) Dimensionally inspect Refer to Fig.5, 7 and 9 (12) Clean weld edges of existing Refer to Fig.7. liner walls and replacement OMat 508 Polishing buff head section (13) Locally degrease all weld edges Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-100-101 (14) Assemble replacement head section Refer to Fig.5, 6, 7 and 10. assembly and existing inner and Ensure correct radial and axial outer liner walls into welding position fixture Tools MH13432/2 Location clamp ring (inner wall) MH13775/2 Location clamp ring (outer wall) MH16253 Check and welding fixture MH13402 Location ring (15) Argonarc tackweld around Refer to Fig.5 and 7 circumference of combustion Engine Overhaul Processes Manual, liner head assembly and inner T.S.D.594-J, TASK 70-00-00-300-409. and outer wall joints Tackweld through location ring slots. Group 2 welds 12,7 mm. (0.500in.) long Tools MH13406/1 Outer wall argon backing block MH13403/2 Inner wall argon backing block Welding Data



# RB.211−72−9670 Aug.27/93 Page 16Printed in Great BritainType of welding .. .. .. .. .. Argonarc DC output Weld group .. .. .. .. .. .. Group 2 Filler material .. .. .. .. .. OMat 3/62 (C263 material) Torch .. .. .. .. .. .. .. BOC 200 or any 200 amp water cooled equivalent Electrode .. .. .. .. .. .. 2 per cent thoriated tungsten 0.093in. dia. Current .. .. .. .. .. .. 20 to 25 amps Gas flow .. .. .. .. .. .. 25 C.F.H. for torch 15 C.F.H. for backing Polarity .. .. .. .. .. .. Negative This data is given for guidance only. Optimum settings must be obtained by trials. (16) Remove tackwelded assembly from fixture (17) Planish joints at inner and outer positions to produce good butt joints (18) Argonarc weld complete inner and Refer to Fig.5 and 7. outer circumferential joints Refer to Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-300-409 and Welding Data in Operation 2.C.(15) OMat 3/62 C263 material filler wire Tools MH13406/1 Outer wall argon backing block MH13403/2 Inner wall argon backing block (19) Fluorescent penetrant inspect Engine Overhaul Processes Manual, welded areas T.S.D.594-J, TASK 70-00-00-200-210 or TASK 70-00-00-200-213. Reject if cracked (20) Inspect weld Engine Overhaul Processes Manual, T.S.D.594-J, TASK 70-00-00-300-409, Fig.70-00-00-990-409-003, 004, 005, A06 and B06 butt weld acceptance standards. Group 2 welds



# RB.211−72−9670 Aug.27/93 Page 17Printed in Great Britain(21) Dress excess weld bead flush Maximum height of weld bead after to parent material dressing to be 0,25 mm. (0.010in.). Parent material must not be reduced Use portable grinding equipment (22) Dimensionally inspect Refer to Fig.5, 7 and 10 and Engine Manual, TASK 72-41-13-300-072, Repair Scheme FRS2518 - Basic Repair Data. Locate in check/weld fixture and inspect liner wall positions Tools MH16253 Checking and welding fixture MH13432/2 Location clamp ring (inner wall) MH13775/2 Location clamp ring (outer wall) MH13434 Check gauge (inner wall) MH13814 Check gauge (outer wall) (23) Re-apply thermal barrier Refer to Fig.5 and 7 and Engine coating to areas of weld joints Manual, TASK 72-41-13-300-075, and apply to designated areas Repair Scheme FRS5366 in head assembly (24) Select wire thread inserts Refer to Fig.11 and 3. Material Information
Parts AGS3707 Wire thread insert (25) Fit wire thread inserts Refer to Fig.11 and Standard Practices Manual, TASK 70-42-13-300-001, Repair Scheme FRS3002. Fit wire thread insert AGS3707, nominal unified thread size 0.250in. dia. x 28 T.P.I. Tools HC22892 Insert tool 3405528 Tang removal tool 

# RB.211−72−9670 Aug.27/93 Page 18Printed in Great BritainHCU5037 Thread gauge (26) Check torque of inserts Tools HC21740 Torque check plug HC21743 Torque adapter 1704302 Torquemaster (27) Inspect inserts Refer to Fig.11. Ensure inserts are installed at correct depth (28) Cancel existing part number Existing Re-number and adjacent to it re-identify with new part number by UL16885 ) UL34266 vibro-engraving UL27107 ) Use vibro-engraving equipment D. The front combustion liner assembly reworked as detailed in this Service Bulletin is interchangeable with existing. Remove and install in accordance with current overhaul procedure (Engine Manual, 72-41-13, Removal and Installation, 72-41-00, Disassembly and Assembly). E. A record of accomplishment is required.



# RB.211−72−9670 Aug.27/93 Page 19Printed in Great BritainInstructions for removing inner and outer walls Fig.1 

# RB.211−72−9670 Aug.27/93 Page 20Printed in Great BritainSection through combustion liner showing wall and head separation Fig.2 

# RB.211−72−9670 Aug.27/93 Page 21Printed in Great BritainSection through combustion liner showing addition of new head assembly Fig.3 

# RB.211−72−9670 Aug.27/93 Page 22Printed in Great BritainSection AL (see Fig.3) combustion liner Fig.4 

# RB.211−72−9670 Aug.27/93 Page 23Printed in Great BritainInstructions for removing inner and outer walls Fig.5 

# RB.211−72−9670 Aug.27/93 Page 24Printed in Great BritainSection through combustion liner showing wall and head separation Fig.6 

# RB.211−72−9670 Aug.27/93 Page 25Printed in Great BritainSection through combustion liner Fig.7 

# RB.211−72−9670 Aug.27/93 Page 26Printed in Great BritainView on arrow AD (see Fig.6) combustion liner Fig.8 

# RB.211−72−9670 Aug.27/93 Page 27Printed in Great BritainSection AJ (see Fig.8) combustion liner Fig.9 

# RB.211−72−9670 Aug.27/93 Page 28Printed in Great BritainSection AC (see Fig.7) combustion liner Fig.10 

# RB.211−72−9670 Aug.27/93 Page 29Printed in Great BritainSection through combustion liner Fig.11 

# RB.211−72−9670 Aug.27/93 Page 30Printed in Great Britain3. Material Information NOTE: For unit list prices, see supplement to this bulletin.
I.P.C. Fig./ New Old Instructions Item Part No. Qty Keyword Mat. Part No. Disposition

________________________________________________________________________________ A. The kit required consists of the following parts: All engines and modules 72-41-13 Parts 1 and 2 of S.B. 02262 AGS3707 54 Insert, wire thread QED AGS3707 (5) (0.250in. dia.) (VU1653) Part 1 of S.B. 02274 UL34277 1 Head section assy - UL14459 (1)(4) combustion liner Part 2 of S.B. 02274 UL34278 1 Head assy - outer - UL25911 (1)(4) shell section B. Parts to be reworked: All engines and modules 72-41-13 Part 1 of S.B. 02250 UL34009 1 Liner assy, combustion - - UL16885) front UL26916) UL27107) (1)(2) UL28972) UL28974) Part 2 of S.B. 02250 UL34266 1 Liner assy, combustion - - UL16885) (1)(3) front UL27107)



# RB.211−72−9670 Aug.27/93 Page 31Printed in Great BritainC. New production parts: The following parts will be made available as future spares in addition to that listed under A. and B.
None D. Instructions disposition codes: (1) Old and new parts are freely and fully interchangeable. (2) For rework refer to Fig.1 to 4 and 11. (3) For rework refer to Fig.5 to 11. (4) Not available as a spare for replenishment purposes. (5) Old part destroyed during rework.



# RB.211−72−9670 Aug.27/93 Page 32Printed in Great BritainFamily tree - Front combustion liner head sections and meter panels Sheet 1 of 4 

# RB.211−72−9670 Aug.27/93 Page 33Printed in Great BritainFamily tree - Front combustion liner head sections and meter panels Sheet 2 of 4 

# RB.211−72−9670 Aug.27/93 Page 34Printed in Great BritainFamily tree - Front combustion liner head sections and meter panels Sheet 3 of 4 

# RB.211−72−9670 Aug.27/93 Page 35Printed in Great BritainFamily tree - Front combustion liner head sections and meter panels Sheet 4 of 4 

# RB.211−72−9670 Aug.27/93 Page 36Printed in Great BritainFamily tree - Front combustion liner Sheet 1 of 6 

# RB.211−72−9670 Aug.27/93 Page 37Printed in Great BritainFamily tree - Front combustion liner Sheet 2 of 6 

# RB.211−72−9670 Aug.27/93 Page 38Printed in Great BritainFamily tree - Front combustion liner Sheet 3 of 6 

# RB.211−72−9670 Aug.27/93 Page 39Printed in Great BritainFamily tree - Front combustion liner Sheet 4 of 6 

# RB.211−72−9670 Aug.27/93 Page 40Printed in Great BritainFamily tree - Front combustion liner Sheet 5 of 6 

# RB.211−72−9670 Aug.27/93 Page 41Printed in Great BritainFamily tree - Front combustion liner Sheet 6 of 6 

# RB.211−72−9670 Aug.27/93 Page 42Printed in Great BritainFamily tree - Front combustion liner Sheet 1 of 5 

# RB.211−72−9670 Aug.27/93 Page 43Printed in Great BritainFamily tree - Front combustion liner Sheet 2 of 5 

# RB.211−72−9670 Aug.27/93 Page 44Printed in Great BritainFamily tree - Front combustion liner Sheet 3 of 5 

# RB.211−72−9670 Aug.27/93 Page 45Printed in Great BritainFamily tree - Front combustion liner Sheet 4 of 5 

# RB.211−72−9670 Aug.27/93 Page 46Printed in Great BritainFamily tree - Front combustion liner Sheet 5 of 5 

# RB.211−72−9670 Aug.27/93 Page 47Printed in Great BritainFamily tree - Front combustion liner Sheet 1 of 2 

# RB.211−72−9670 Aug.27/93 Page 48Printed in Great BritainFamily tree - Front combustion liner Sheet 2 of 2 

# RB.211−72−9670 Aug.27/93 Page 49Printed in Great BritainENGINE - COMBUSTION SECTION - IMPROVED PACKAGE 1 COMBUSTION LINER HEAD IN C263 MATERIAL AND LOCAL THICKENED DIFFUSER WALLS AROUND STRUTS - MOD.72-9670

SUPPLEMENT - PRICES AND AVAILABILITY This is a technical document not a quotation; any prices and delivery given are in good faith without engagement. Alternative parts may be supplied instead of parts listed. See Material Information disposition instructions. 1. Modification Kit Not applicable. Parts supplied as single line items. Future spares will be supplied to this Service Bulletin standard when existing stocks of parts have been used up; approximately July 1994 2. New production or reworked parts Unit Price Part No. Qty U.S. Dollars UL34009 1 UL34266 1 AGS3707 54 UL34277 1 UL34278 1 3. Tools Delivery can commence in 20 weeks from receipt of order. Unit Price Tool No. U.S. Dollars MH13402 837.00 MH13403/1 1415.00 MH13406/1 1416.00 MH13432/1 1869.00 MH13434 418.00 MH13775/2 2452.00 MH13814 375.00 MH16253 17210.00 HC22892 317.00 3405528 38.70 HCU5037 138.00 HC21740 144.00 HC21743 144.00 

# RB.211−72−9670 Aug.27/93 Supplement Page 1 of 2Printed in Great Britain1704302 73.20



# RB.211−72−9670 Aug.27/93 Supplement - Page 2Printed in Great Britain